"I've always watched those movies with the proms and big formals," she said.

"I always wanted to have a really nice formal dress and be small like everyone else."

TRANSFORMED: Josephine Desgrand weighed 120kg one year ago and now weighs just 60kg.Contributed

As she stepped out of a fancy Corvette and onto the red carpet, it was a defining moment for Josie who couldn't believe she had finally achieved her dream weight for the event she had dreamt of her entire life.

"Putting on that red dress for the first time I was like 'wow'," she said.